Displaying and maintaining QoS policies ·················································································································· 26

Configuring priority mapping ··································································································································· 28

Overview ········································································································································································· 28

Introduction to priorities ········································································································································ 28

Priority maps ·························································································································································· 28

Priority mapping configuration tasks ··························································································································· 29

Configuring an uncolored priority map ······················································································································· 29

Configuring a port to trust packet priority for priority mapping ··············································································· 30

Changing the port priority of an interface ·················································································································· 30

Displaying and maintaining priority mapping ············································································································ 30

Port priority configuration example ······························································································································ 31

Network requirements ··········································································································································· 31

Configuration procedure ······································································································································ 31

Priority mapping table and priority marking configuration example ······································································· 32

Configuring traffic policing, GTS, and rate limit ····································································································· 35

Traffic evaluation and token buckets ··················································································································· 35

Traffic policing ······················································································································································· 36

GTS ········································································································································································· 37

Rate limit ································································································································································· 37

Configuring traffic policing ··········································································································································· 38

Configuring traffic policing by using the MQC approach ··············································································· 38

Configuring traffic policing by using the non-MQC approach ········································································ 39

Configuring GTS ···························································································································································· 40

Configuring GTS by using the MQC approach ································································································· 40

Configuring GTS by using the non-MQC approach ························································································· 41

Configuring the rate limit ·············································································································································· 42

Displaying and maintaining traffic policing, GTS, and rate limit ············································································· 42

Traffic policing and GTS configuration example ········································································································ 43

IP rate limit configuration example ······························································································································· 44

Configuring congestion management ······················································································································ 46

FIFO ········································································································································································ 47

WFQ ······································································································································································· 47

CBQ ········································································································································································ 48

Congestion management technique comparison ······························································································· 49

Configuring the FIFO queue size·································································································································· 50

Displaying and maintaining FIFO ································································································································ 51

Configuring WFQ ·························································································································································· 51

Displaying and maintaining WFQ ······························································································································· 52

Configuring CBQ ··························································································································································· 52

Predefined classes, traffic behaviors, and policies ···························································································· 52

Defining a class ····················································································································································· 53

Defining a traffic behavior ··································································································································· 53